One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,7,4,6)(10,14)(11,13)(17,18,23,19)(20,28,30,29)(21,27,22,25)(24,32,26,31)(1,3,5,4)(2,6,8,7)(9,10,12,14)(11,16,13,15)(17,19,23,18)(20,29,30,28)(21,27,22,25)(24,32,26,31)(10,15)(11,13)(14,16)(17,20,23,30)(18,24,19,26)(21,32,22,31)(25,29,27,28)(1,4,5,3)(2,7,8,6)(9,11,12,13)(10,16,14,15)(20,30)(24,26)(28,29)(31,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.